What causes a black screen and what to try first

A black screen usually means one of three things: your monitor is off or disconnected, your graphics card or driver has failed, or Windows has crashed but is still running in the background. Before you assume the worst, check the physical connections first—it takes 30 seconds and solves most cases.

Look at your monitor's power button and the cable running from the back of your monitor to the wall outlet or power strip. If the monitor is off, turn it on. If the cable is loose, push it firmly into the outlet. Check the cable connecting your monitor to your PC (usually HDMI, DisplayPort, or VGA)—unplug it from both ends and plug it back in. If you have a desktop, also check that the power cable running to your PC itself is plugged in and that the power button on the case is pressed.

If the screen is still black but you hear your PC running, move to the next section. If nothing happens when you press the power button, your PC may not be getting power at all—check that the outlet works by plugging in a lamp, and make sure the power supply switch on the back of your case (if you have a desktop) is set to On.

Key Takeaways

  • Check your monitor's power and cable connections first—most black screens are caused by loose cables or a powered-off monitor, not hardware failure.
  • If your PC is running but the screen is black, try restarting by holding the power button for 10 seconds, then pressing it again to turn the PC back on.
  • If restarting does not work, boot into Safe Mode by restarting and pressing F8 or Shift+F8 repeatedly during startup to see if a driver or software is causing the problem.
  • A black screen with a cursor usually means Windows loaded but the desktop did not—try pressing Ctrl+Alt+Delete to open Task Manager and restart Windows Explorer.
  • If none of these steps work, your graphics card driver may need to be reinstalled, which usually requires booting from a USB drive or accessing Windows in Safe Mode.

Restart your PC and watch for signs of life

If your monitor is on and connected but still black, and you can hear your PC running, the next step is to force a restart. Hold down the power button on your PC case for 10 seconds until the machine shuts down completely. Wait 5 seconds, then press the power button once to turn it back on. Watch and listen as it boots—you should hear fans spin up, see lights on the case or keyboard, and eventually see something on the screen.

During startup, look for any signs that Windows is loading: a Windows logo, a spinning circle, or text. If you see any of these, let the PC finish booting—it may take a minute or two. If the screen stays completely black and silent, your PC may not be starting at all, which points to a power supply or motherboard problem that requires professional repair.

If the PC starts and you hear it running but the screen stays black, try pressing Caps Lock on your keyboard—if the Caps Lock light turns on, Windows is probably running but not displaying anything. This is a graphics driver or display problem, not a total system failure.

Boot into Safe Mode to isolate the problem

Safe Mode starts Windows with only the essential drivers and services, which helps you figure out whether a third-party driver or program is causing the black screen. Restart your PC and when ready start pressing F8 repeatedly (or Shift+F8 on newer Windows versions) before the Windows logo appears. You should see a menu with options including "Safe Mode" and "Safe Mode with Networking."

Select Safe Mode and press Enter. Windows will load with a basic video driver and a low resolution—the screen may look stretched or have large text, but it should display something. If Safe Mode works and you see the desktop, the problem is a graphics driver, a recently installed program, or a Windows update. If the screen is still black even in Safe Mode, the problem is deeper in Windows itself or in your hardware.

If you reach the Safe Mode desktop, restart your PC normally and check for recent changes: uninstall any graphics driver updates from the last few days, uninstall any new programs you installed before the black screen started, or use Windows System Restore to roll back to a date before the problem began. You can access System Restore by typing "system restore" in the search box on the taskbar.

Use Task Manager if you see a cursor but no desktop

If your screen is black but you can see a white cursor (arrow) that moves when you move your mouse, Windows has loaded but the desktop environment has crashed. This is fixable without restarting. Press Ctrl+Alt+Delete on your keyboard—this opens a menu with options including Task Manager. Click on Task Manager.

In Task Manager, look for an entry called "Windows Explorer" in the list of running processes. If it is there, right-click on it and select "Restart." Windows Explorer is the program that draws your desktop, taskbar, and file windows—restarting it often brings your screen back to life. If Windows Explorer is not in the list, click "File" at the top of Task Manager, select "Run new task," type "explorer.exe," and click OK.

If Task Manager itself does not open when you press Ctrl+Alt+Delete, or if restarting Windows Explorer does not fix the black screen, your graphics driver or a system service has failed more seriously. Restart your PC and try Safe Mode again, or move to the next section on reinstalling your graphics driver.

Reinstall or update your graphics driver

Your graphics driver is the software that tells Windows how to use your graphics card (or built-in graphics chip). If the driver is corrupted or outdated, you may see a black screen even though Windows is running. The fix usually requires booting into Safe Mode or using a different computer to read the driver.

If you can reach Safe Mode, open a web browser and go to the website of your graphics card manufacturer. If you have an NVIDIA card, visit nvidia.com/read/driverDetails. If you have AMD, go to amd.com/en/support. If you have Intel integrated graphics, visit intel.com/content/www/us/en/support/detect.html. read the driver for your specific card and Windows version, save it to a USB drive or email it to yourself, then transfer it to your PC in Safe Mode. Run the installer and restart.

If you cannot reach Safe Mode or do not know which graphics card you have, you can try a different approach: restart your PC, press F2 or Delete during startup to enter the BIOS (the screen that appears before Windows loads), and look for an option to disable your dedicated graphics card or switch to integrated graphics. This forces Windows to use a basic video driver that almost always works, which will let you boot and then read the correct driver. The exact steps vary by PC model—search "[your PC model] disable graphics card BIOS" for specific instructions.

Check for hardware failure if nothing else works

If you have tried restarting, Safe Mode, Task Manager, and driver reinstallation and the screen is still black, a hardware component may have failed. The most common culprits are a failing graphics card, a loose RAM stick, or a failing power supply.

If you have a desktop PC, you can try reseating your RAM: shut down the PC completely, unplug the power cable, wait 30 seconds, then open the case. Locate the RAM sticks (long, thin modules standing upright in the motherboard), press the clips on each end to release them, remove them, and push them firmly back in until the clips click. Close the case, plug in the power cable, and restart. Loose RAM can cause a black screen or no display at all.

If reseating RAM does not work, or if you have a laptop and cannot easily access the hardware, the next step is to take your PC to a repair technician. They can test your power supply, graphics card, and motherboard with specialized equipment and replace any failed parts. Before you do, try one more thing: if you have access to a second monitor, plug it into your PC—if the second monitor works, your graphics card is probably fine and the problem is your original monitor. If the second monitor is also black, the graphics card or driver is almost certainly the problem.

Frequently Asked Questions

Why is my screen black but my PC is running?

Your graphics driver has likely crashed, or Windows has loaded but the desktop environment has not. Try pressing Ctrl+Alt+Delete to open Task Manager and restart Windows Explorer. If that does not work, boot into Safe Mode to see if a driver or program is blocking the display.

Can a black screen mean my hard drive is broken?

A black screen usually means a graphics or display problem, not a hard drive failure. If your hard drive were broken, your PC would not start at all or would show an error message before the black screen. If you hear clicking sounds coming from your PC, that is a sign of hard drive failure and you should shut down when ready and seek professional help.

What if I see a black screen with a blinking cursor?

A blinking cursor on a black screen usually means Windows is trying to boot but cannot find the operating system. This points to a hard drive problem or a corrupted Windows installation. Restart your PC and try Safe Mode. If Safe Mode does not work, you may need to reinstall Windows using a USB drive.

Should I force restart my PC if the screen is black?

Yes, if the screen has been black for more than a few minutes and you cannot move the mouse or see any signs of activity. Hold the power button for 10 seconds to shut down, wait 5 seconds, then press it again to restart. Forcing a restart can sometimes fix a frozen system, though it is not ideal if you have unsaved work.

How do I know if my monitor is broken or if it is a PC problem?

Try plugging your monitor into a different PC, or plugging a different monitor into your PC. If your monitor works with another PC, the problem is your PC. If another monitor does not work with your PC, the problem is your PC's graphics output. If your monitor does not work with any PC, the monitor itself is broken.